text: from __future__ import unicode_literals
  from lxml import etree
  
  def get_urls(releases, **kwargs):
      return {
          'https://docs.openstack.org/developer/pbr/history.html'
      }, set()
  
  
  def get_content(session, urls):
      log = ""
      for url in urls:
          r = session.get(url)
          if r.status_code == 200:
              root = etree.HTML(r.content)
              for item in root.xpath("//div[@class='section']"):
                  try:
                      log += "{version}\n{content}\n\n".format(
                          version=item.xpath("h3/text()")[0],
                          content="\n".join(["- {}".format(li) for li in item.xpath("ul/li/text()")])
                      )
                  except IndexError:
                      pass
      return log
  
  